EP2690763A1 - Electric fluid pump for a motor vehicle - Google Patents

Electric fluid pump for a motor vehicle Download PDF

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Publication number
EP2690763A1
EP2690763A1 EP12178029.0A EP12178029A EP2690763A1 EP 2690763 A1 EP2690763 A1 EP 2690763A1 EP 12178029 A EP12178029 A EP 12178029A EP 2690763 A1 EP2690763 A1 EP 2690763A1
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EP
European Patent Office
Prior art keywords
circuit board
motor
feed pump
liquid feed
electromotive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12178029.0A
Other languages
German (de)
French (fr)
Other versions
EP2690763B1 (en
Inventor
Enrico Lindner
Wolfgang Dr. Zacher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pierburg Pump Technology GmbH
Original Assignee
Pierburg Pump Technology GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pierburg Pump Technology GmbH filed Critical Pierburg Pump Technology GmbH
Priority to EP12178029.0A priority Critical patent/EP2690763B1/en
Publication of EP2690763A1 publication Critical patent/EP2690763A1/en
Application granted granted Critical
Publication of EP2690763B1 publication Critical patent/EP2690763B1/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/306—Lead-in-hole components, e.g. affixing or retention before soldering, spacing means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
    • H02K2211/03—Machines characterised by circuit boards, e.g. pcb
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10151—Sensor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10424—Frame holders

Definitions

  • the invention relates to an electromotive vehicle liquid feed pump with a housing in which an electrically commutated motor stator and a permanently excited motor rotor, which is arranged on a rotor shaft / axis, are provided, wherein in a dry area of the housing a potting compound provided free circuit board is that has at least one non-contact sensor for detecting a rotor position and other electronic components, which are electrically connected via connecting wires to the circuit board.
  • Such feed pumps are well known and are used for example as coolant pumps.
  • a non-contact sensor for example a Hall sensor
  • further electronic components for example for controlling the commutation, are arranged on a printed circuit board.
  • Such a liquid feed pump is for example from the EP 1 850 010 A2 known. It has now been found that the life of the circuit board and thus also of the pump is reduced to a considerable extent by a so-called dendrite growth on the circuit board as a result of residues present after assembly.
  • the invention is therefore based on the object to provide an electromotive vehicle liquid feed pump, which avoids the above-mentioned disadvantages in a cost-effective and simple assembly technique.
  • spacer members are provided, such that in the final assembled state large-scale free wash zones are formed in the region of the non-contact sensor and the electronic components on the circuit board.
  • a holder element is provided, on which the non-contact sensor and the electronic components are arranged and which is arranged on the spacer members spaced from the circuit board, a simple pre-assembly of the non-contact sensor and the electronic components is ensured.
  • the spacing elements can be an integral part of centering elements for the non-contact sensor, the electronic components and / or the holder element.
  • the motor rotor is outboard and the motor stator running inside.
  • a control unit is provided on the board.
  • the board is equipped on one side only on their motor-facing side.
  • the holder element can be connected in an advantageous manner by means of a clip connection with the circuit board.
  • the feed pump is a coolant pump, since the feed pump according to the invention is particularly suitable for coolant delivery by its compact and cost-effective design for use in the space limited engine compartment.
  • FIG. 1 shows a motor vehicle liquid feed pump 2 according to the invention with a housing 4 in which an electronically commutated motor stator 6 and a permanently excited motor rotor 8 are provided.
  • the motor rotor 8 is arranged on the outside on a rotor axis 9 and the motor stator 6 on the inside.
  • a split pot 10 is provided, such that the motor rotor 8 in a wet area 12 and the motor stator 6 is arranged in a drying area 14.
  • the motor rotor 8 can also be arranged on a rotor shaft instead of on a rotor axis 9.
  • a potting compound free circuit board 16 is arranged in the housing 4, which only on their motor 6, 8 side facing one side with a non-contact sensor 18 and other electronic components, such as a control unit 20 (see FIG. 2 ) is equipped.
  • this arrangement is only one embodiment.
  • a double-sided assembly of the circuit board 16 is possible.
  • the motor vehicle liquid feed pump 2 has a pump rotor hidden by the housing 4, which is arranged on the end of the motor vehicle liquid feed pump 2 facing away from the printed circuit board 16.
  • FIG. 2 shows in a side view, the circuit board 16 with a holder member 22.
  • the Hall sensor 18 and the control unit 20 are fixed and connected in a known manner via connecting wires 24, 26 electrically connected to the circuit board 16.
  • the holder element 22 centering elements 28 (of which only one is shown here) and spacer members 30 which are an integral part of the holder element 22. It should be clear that both centering members 28 and spacer members 30 can also be an integral part of the printed circuit board and then correspond to the holder element 22. Via a clip connection 32, the holder element is connected to the circuit board 16. As a result, large-scale free wash zones 34 are created, whereby a residue-free cleaning of the circuit board 16 is ensured after assembly. A dendrite growth and the associated reduction in the life of the motor vehicle liquid feed pump 2 is thereby effectively prevented.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The pump has a housing in which an electrical commutated motor stator and a permanently excited motor rotor are provided. The rotor is arranged on driveshaft/axles. A casting material-free circuit board (16) is provided in a drying region of the housing. Electronic parts (20) are electrically connected with the board over lead wires (24, 26). Spacing elements (30) are provided such that wide free washing zones (34) are formed in a region of a contactless sensor (18) and the electronic components on the board in a final mounted state.

Description

Die Erfindung betrifft eine elektromotorische Kfz-Flüssigkeits-Förderpumpe mit einem Gehäuse, in dem ein elektrisch kommutierter Motorstator und ein permanent erregter Motorrotor, der auf einer Rotorwelle/-achse angeordnet ist, vorgesehen sind, wobei in einem Trockenbereich des Gehäuses eine Vergussmasse freie Leiterplatte vorgesehen ist, die zumindest einen berührungslosen Sensor zur Erfassung einer Rotorposition sowie weitere elektronische Bauteile aufweist, welche über Anschlussdrähte elektrisch mit der Leiterplatte verbunden sind.The invention relates to an electromotive vehicle liquid feed pump with a housing in which an electrically commutated motor stator and a permanently excited motor rotor, which is arranged on a rotor shaft / axis, are provided, wherein in a dry area of the housing a potting compound provided free circuit board is that has at least one non-contact sensor for detecting a rotor position and other electronic components, which are electrically connected via connecting wires to the circuit board.

Derartige Förderpumpen sind hinlänglich bekannt und werden beispielsweise als Kühlmittelpumpen eingesetzt. Um eine Rotorlage-Information für die elektrische Kommutierung zu erhalten, ist ein berührungslose Sensor, beispielsweise ein Hallsensor, vorgesehen. Des Weiteren sind weitere elektronische Bauteile, beispielsweise zur Ansteuerung der Kommutierung, auf einer Leiterplatte angeordnet. Eine derartige Flüssigkeits-Förderpumpe ist beispielsweise aus der EP 1 850 010 A2 bekannt. Es hat sich nun herausgestellt, dass die Lebensdauer der Leiterplatte und damit auch der Pumpe durch ein sogenanntes Dendritenwachstum auf der Leiterplatte als Folge von nach der Bestückung vorhandenen Rückständen in erheblichem Maße verringert wird. Auch die Reinigung der Leiterplatte in einem sogenannten Freiwaschprozess stößt insbesondere in den Bereichen der Elektronikbauteile und des Hallsensors dahingehend auf Probleme, dass in diesen Bereichen die Rückstände nicht vollständig beseitigt werden können. Auch ist es in dem vorliegenden Anwendungsfall einer Kfz-Flüssigkeits-Förderpumpe nicht möglich, die Leiterplatte beispielsweise mit einer Vergussmasse zu überziehen, um diese Nachteile zu verhindern oder zu zumindest zu verringern, da aufgrund der hohen Temperaturentwicklung in einer derartiger Förderpumpe die Leiterplatte frei von derartigen Beschichtungen bleiben muss.Such feed pumps are well known and are used for example as coolant pumps. In order to obtain rotor position information for the electrical commutation, a non-contact sensor, for example a Hall sensor, is provided. Furthermore, further electronic components, for example for controlling the commutation, are arranged on a printed circuit board. Such a liquid feed pump is for example from the EP 1 850 010 A2 known. It has now been found that the life of the circuit board and thus also of the pump is reduced to a considerable extent by a so-called dendrite growth on the circuit board as a result of residues present after assembly. The cleaning of the printed circuit board in a so-called free-washing process encounters in particular in the areas of electronic components and the Hall sensor to the effect that in these areas, the residues are not completely eliminated can. Also, it is not possible in the present application of a motor vehicle liquid feed pump to coat the circuit board, for example, with a potting compound to prevent or at least reduce these disadvantages, since due to the high temperature development in such a feed pump, the circuit board free of such Coatings must remain.

Der Erfindung liegt daher die Aufgabe zugrunde, eine elektromotorische Kfz-Flüssigkeits-Förderpumpe bereitzustellen, die auf kostengünstige und montagetechnisch einfache Weise die oben genannten Nachteile vermeidet.The invention is therefore based on the object to provide an electromotive vehicle liquid feed pump, which avoids the above-mentioned disadvantages in a cost-effective and simple assembly technique.

Diese Aufgabe wird dadurch gelöst, dass Abstandsorgane vorgesehen sind, derart, dass im endmontierten Zustand großflächige Freiwaschzonen im Bereich des berührungslosen Sensors und der elektronischen Bauteile auf der Leiterplatte ausgebildet sind. Hierdurch ist es möglich, dass der Freiwaschvorgang nach der Bestückung der Leiterplatte möglichst effizient und vollständig durchgeführt werden kann. Es können sich keine Rückstände an den extrem strömungsgünstig ausgebildeten Abstandsorganen bilden, wodurch das Dendritenwachstum weitestgehend unterbunden werden kann. Dadurch, dass ein Halterelement vorgesehen ist, auf dem der berührungslose Sensor und die elektronischen Bauteile angeordnet sind und das über die Abstandsorgane von der Leiterplatte beabstandet angeordnet ist, ist eine einfache Vormontage des berührungslosen Sensors und der elektronischen Bauteile gewährleistet. In vorteilhafter Weise können die Abstandsorgane integraler Bestandteil von Zentrierorganen für den berührungslosen Sensor, die Elektronikbauteile und/oder das Halterelement sein. In vorteilhafter Weise ist der Motorrotor außenliegend und der Motorstator innenliegend ausgeführt. Hierbei kann ein Spalttopf den Nassbereich mit dem Motorrotor und einem Pumpenrotor von dem den Motorstator aufweisenden Trockenbereich trennen.This object is achieved in that spacer members are provided, such that in the final assembled state large-scale free wash zones are formed in the region of the non-contact sensor and the electronic components on the circuit board. This makes it possible that the free washing process after the assembly of the circuit board can be performed as efficiently and completely. There may be no residues on the extremely aerodynamically formed spacer organs, whereby the dendrite growth can be largely prevented. Characterized in that a holder element is provided, on which the non-contact sensor and the electronic components are arranged and which is arranged on the spacer members spaced from the circuit board, a simple pre-assembly of the non-contact sensor and the electronic components is ensured. Advantageously, the spacing elements can be an integral part of centering elements for the non-contact sensor, the electronic components and / or the holder element. Advantageously, the motor rotor is outboard and the motor stator running inside. Here, a split pot the wet area with the Separate the motor rotor and a pump rotor from the dry area that has the motor stator.

In vorteilhafter Weise ist auf der Platine eine Steuereinheit vorgesehen. Für eine einfache Montage kann es zudem vorteilhaft sein, wenn die Platine nur auf ihrer Motor zugewandten Seite einseitig bestückt ist.Advantageously, a control unit is provided on the board. For ease of installation, it may also be advantageous if the board is equipped on one side only on their motor-facing side.

Das Halterelement kann auf vorteilhafte Weise mittels einer Clipsverbindung mit der Leiterplatte verbunden sein.The holder element can be connected in an advantageous manner by means of a clip connection with the circuit board.

Vorzugsweise ist die Förderpumpe eine Kühlmittelpumpe, da sich die erfindungsgemäße Förderpumpe insbesondere durch ihre kompakte und kostengünstige Bauweise für den Einsatz im Bauraum begrenzten Motorinnenraum zur Kühlmittelförderung eignet.Preferably, the feed pump is a coolant pump, since the feed pump according to the invention is particularly suitable for coolant delivery by its compact and cost-effective design for use in the space limited engine compartment.

Die Erfindung wird anhand einer Zeichnung näher beschrieben, hierbei zeigt:

  • Figur 1 eine perspektivische, aufgeschnittene Ansicht einer erfindungsgemäßen elektromotorischen Kfz-Flüssigkeits-Förderpumpe, und
  • Figur 2 eine Seitenansicht einer Leiterplatte mit einem Halterelement für die Kfz-Flüssigkeits-Förderpumpe aus Figur 1.
The invention will be described in more detail with reference to a drawing, in which:
  • FIG. 1 a perspective, cutaway view of an electromotive automotive liquid feed pump according to the invention, and
  • FIG. 2 a side view of a printed circuit board with a holder element for the motor vehicle liquid pump FIG. 1 ,

Figur 1 zeigt eine erfindungsgemäße Kfz-Flüssigkeits-Förderpumpe 2 mit einem Gehäuse 4, in dem ein elektronisch kommutierter Motorstator 6 sowie ein permanent erregter Motorrotor 8 vorgesehen sind. Der Motorrotor 8 ist im vorliegenden Ausführungsbeispiel außenliegend auf einer Rotorachse 9 und der Motorstator 6 innenliegend angeordnet. Des Weiteren ist ein Spalttopf 10 vorgesehen, derart, dass der Motorrotor 8 in einem Nassbereich 12 und der Motorstator 6 in einem Trockenbereich 14 angeordnet ist. Es sollte deutlich sein, dass der Motorrotor 8 anstatt auf einer Rotorachse 9 auch auf einer Rotorwelle angeordnet sein kann. FIG. 1 shows a motor vehicle liquid feed pump 2 according to the invention with a housing 4 in which an electronically commutated motor stator 6 and a permanently excited motor rotor 8 are provided. In the present exemplary embodiment, the motor rotor 8 is arranged on the outside on a rotor axis 9 and the motor stator 6 on the inside. Furthermore, a split pot 10 is provided, such that the motor rotor 8 in a wet area 12 and the motor stator 6 is arranged in a drying area 14. It should be clear that the motor rotor 8 can also be arranged on a rotor shaft instead of on a rotor axis 9.

Des Weiteren ist in dem Gehäuse 4 eine Vergussmasse freie Leiterplatte 16 angeordnet, die lediglich auf ihrer dem Motor 6, 8 zugewandten Seite einseitig mit einem berührungslosen Sensor 18 und weiteren Elektronikbauteilen, wie zum Beispiel einer Steuereinheit 20 (siehe hierzu Figur 2) bestückt ist. Diese Anordnung stellt jedoch nur eine Ausführungsform dar. Es ist natürlich auch eine doppelseitige Bestückung der Leiterplatte 16 möglich. Die Kfz-Flüssigkeits-Förderpumpe 2 weist einen durch das Gehäuse 4 verdeckten Pumpenrotor auf, der auf dem von den Leiterplatte 16 abgewandten Ende der Kfz-Flüssigkeits-Förderpumpe 2 angeordnet ist.Furthermore, a potting compound free circuit board 16 is arranged in the housing 4, which only on their motor 6, 8 side facing one side with a non-contact sensor 18 and other electronic components, such as a control unit 20 (see FIG. 2 ) is equipped. However, this arrangement is only one embodiment. Of course, a double-sided assembly of the circuit board 16 is possible. The motor vehicle liquid feed pump 2 has a pump rotor hidden by the housing 4, which is arranged on the end of the motor vehicle liquid feed pump 2 facing away from the printed circuit board 16.

Figur 2 zeigt in einer Seitenansicht die Leiterplatte 16 mit einem Halterelement 22. Auf dem Halterelement 22 sind der Hallsensor 18 und die Steuereinheit 20 befestigt und auf bekannte Weise über Anschlussdrähte 24, 26 elektrisch mit der Leiterplatte 16 verbunden. FIG. 2 shows in a side view, the circuit board 16 with a holder member 22. On the holder member 22, the Hall sensor 18 and the control unit 20 are fixed and connected in a known manner via connecting wires 24, 26 electrically connected to the circuit board 16.

Im vorliegenden Ausführungsbeispiel weist das Halterelement 22 Zentrierelemente 28 (von denen ist hier lediglich eins dargestellt) sowie Abstandsorgane 30 auf, die integraler Bestandteil des Halterelementes 22 sind. Es sollte deutlich sein, dass sowohl Zentrierorgane 28 als auch Abstandsorgane 30 auch integraler Bestandteil der Leiterplatte sein können und dann mit dem Halterelement 22 korrespondieren. Über eine Clipsverbindung 32 ist das Halterelement mit der Leiterplatte 16 verbunden. Hierdurch werden großflächige Freiwaschzonen 34 geschaffen, wodurch eine rückstandsfreie Reinigung der Leiterplatte 16 nach der Bestückung gewährleistet ist. Ein Dendritenwachstum und die damit verbundene Verringerung der Lebensdauer der Kfz-Flüssigkeits-Förderpumpe 2 wird hierdurch wirksam unterbunden.In the present embodiment, the holder element 22 centering elements 28 (of which only one is shown here) and spacer members 30 which are an integral part of the holder element 22. It should be clear that both centering members 28 and spacer members 30 can also be an integral part of the printed circuit board and then correspond to the holder element 22. Via a clip connection 32, the holder element is connected to the circuit board 16. As a result, large-scale free wash zones 34 are created, whereby a residue-free cleaning of the circuit board 16 is ensured after assembly. A dendrite growth and the associated reduction in the life of the motor vehicle liquid feed pump 2 is thereby effectively prevented.

Claims (9)

Elektromotorische Kfz-Flüssigkeits-Förderpumpe (2) mit einem Gehäuse (4), in dem ein elektrisch kommutierter Motorstator (6) und ein permanent erregter Motorrotor (8), der auf einer Rotorwelle/-achse (9) angeordnet ist, vorgesehen sind, wobei in einem Trockenbereich (14) des Gehäuses (4) eine Vergussmasse freie Leiterplatte (16) vorgesehen ist, die zumindest einen berührungslosen Sensor (18) zur Erfassung einer Rotorposition sowie weitere elektronische Bauteile (20) aufweist, welche über Anschlussdrähte (24, 26) elektrisch mit der Leiterplatte (16) verbunden sind, dadurch gekennzeichnet, dass Abstandsorgane (30) vorgesehen sind, derart, dass im endmontierten Zustand großflächige Freiwaschzonen (34) im Bereich des berührungslose Sensors (18) und der Elektronikbauteile (20) auf der Leiterplatte (16) ausgebildet sind.Electromotive vehicle liquid feed pump (2) with a housing (4) in which an electrically commutated motor stator (6) and a permanently excited motor rotor (8), which is arranged on a rotor shaft / shaft (9), are provided, wherein in a dry area (14) of the housing (4) a potting compound free circuit board (16) is provided which has at least one non-contact sensor (18) for detecting a rotor position and further electronic components (20) which via connecting wires (24, 26 ) are electrically connected to the circuit board (16), characterized in that spacer members (30) are provided, such that in the final assembled state large-scale free wash zones (34) in the region of the non-contact sensor (18) and the electronic components (20) on the circuit board (16) are formed. Elektromotorische Kfz-Flüssigkeits-FÖrderpumpe (2) nach Anspruch 1, dadurch gekennzeichnet, dass ein Halteelement (22) vorgesehen ist, auf dem der berührungslose Sensor (18) und die Elektronikbauteile (20) angeordnet sind und das über die Abstandsorgane (30) von der Leiterplatte (16) beabstandet angeordnet ist.Electromotive motor liquid feed pump (2) according to claim 1, characterized in that a holding element (22) is provided, on which the non-contact sensor (18) and the electronic components (20) are arranged and via the spacer members (30) of the circuit board (16) is arranged at a distance. Elektromotorische Kfz-Flüssigkeits-Förderpumpe (2) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Abstandsorgane (30) integraler Bestandteil von Zentrierorganen (28) sind.Electromotive motor liquid feed pump (2) according to claim 1 or 2, characterized in that the spacer members (30) are an integral part of centering members (28). Elektromotorische Kfz-Flüssigkeits-Förderpumpe (2) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Motorrotor (8) außenliegend und der Motorstator (6) innenliegend ausgeführt ist.Electromotive motor vehicle liquid pump (2) according to one of claims 1 to 3, characterized in that the Motor rotor (8) on the outside and the motor stator (6) is designed inside. Elektromotorische Kfz-Flüssigkeits-Förderpumpe (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Spalttopf (10) den Nassbereich (12) mit dem Motorrotor (8) und einem Pumpenrotor von dem den Motorstator (6) aufweisenden Trockenbereich (14) trennt.Electromotive motor-liquid feed pump (2) according to one of the preceding claims, characterized in that a split pot (10) the wet area (12) with the motor rotor (8) and a pump rotor of the motor stator (6) having dry area (14) separates. Elektromotorische Kfz-Flüssigkeits-Förderpumpe (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass auf der Leiterplatte (16) eine Steuereinheit (20) vorgesehen ist.Electromotive vehicle liquid feed pump (2) according to one of the preceding claims, characterized in that a control unit (20) is provided on the printed circuit board (16). Elektromotorische Kfz-Flüssigkeits-Förderpumpe (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Leiterplatte nur auf ihrer dem Motor (6, 8) zugewandten Seite einseitig bestückt ist.Electromotive vehicle liquid feed pump (2) according to one of the preceding claims, characterized in that the printed circuit board is equipped on one side only on its side facing the motor (6, 8) side. Elektromotorische Kfz-Flüssigkeits-Förderpumpe (2) nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, dass das Halterelement (22) vorzugsweise (siehe Anspruch 4) mittels einer Clipsverbindung (32) mit der Leiterplatte (16) verbunden ist.Electromotive vehicle liquid feed pump (2) according to one of claims 2 to 7, characterized in that the holder element (22) is preferably (see claim 4) by means of a clip connection (32) connected to the circuit board (16). Elektromotorische Kfz-Flüssigkeits-Förderpumpe (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Förderpumpe (2) eine Kühlmittelpumpe ist.Electromotive vehicle liquid feed pump (2) according to one of the preceding claims, characterized in that the feed pump (2) is a coolant pump.
EP12178029.0A 2012-07-26 2012-07-26 Electric fluid pump for a motor vehicle Active EP2690763B1 (en)

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EP12178029.0A EP2690763B1 (en) 2012-07-26 2012-07-26 Electric fluid pump for a motor vehicle

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EP12178029.0A EP2690763B1 (en) 2012-07-26 2012-07-26 Electric fluid pump for a motor vehicle

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EP2690763A1 true EP2690763A1 (en) 2014-01-29
EP2690763B1 EP2690763B1 (en) 2017-04-26

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DE4411960A1 (en) * 1994-04-07 1995-10-12 Pierburg Gmbh Electronically commutated electric motor avoiding magnetic couplings
EP0786856A1 (en) * 1996-01-24 1997-07-30 ebm Werke GmbH & Co. Switching device for brushless DC motor
DE10045596A1 (en) * 2000-09-15 2002-04-04 Buhler Motor Gmbh Pump e.g. water pump for motor vehicle, has commutation circuit incorporated in bearing plate between pumping space and electronically-commutated DC motor
EP1850010A2 (en) 2006-04-28 2007-10-31 Bühler Motor GmbH Centrifugal pump
EP2187718A1 (en) * 2008-11-13 2010-05-19 Bühler Motor GmbH Electric drive with a circuit board

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